Dispatch-carrier tube



A ril'l 1924. 1,488,761

I v D. MacMlLLAN DIS PATCH CARRIER TUBE Filed Nov. '2, 1920 I l i i .5 5 I L7 51 V I v a 112-.- v r hit Patented ll, teat.

r r s o a ll i an DUNCAN MACMILLAN, OF BRUOKLYN, NEW YORK.

DISPA'ICH-GA'RRIEB TUBE.

Application filed November 2, 1520.

Z '0 all whom it may concern:

Be it known that l, Duncan MAClldILLAN, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Dispatch-Carrier Tubes; and 1 do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates broadly to an im proved dispatch carrier, but has more particular reference to a tube which forms a part thereof.

The object of the invention is to generally improve upon carriers of this class by providing a tube of leather or other suitable material wherein the edges or ends of the tube are secured together by a unique skived joint, and the usual sleeve which surrounds one end of the tube being secured in place by a corresponding form of joint to insure rigidity and strength and to decidedly increase the life of this part of the carrier.

ltn the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same Figure 1 is a side elevation of a dispatch carrier tube constructed in accordance with this invention.

Fig. 2 is an enlarged longitudinal section of the tube.

Figs. 3 and d are transverse sections taken on the lines 3-3 and 47 4 respectively, of Figs. 2 and 1, respectively.

Fig. 5 is a perspective view of one end of the tube showing the edges separated and the construction of the skived joint more clearly.

lln the drawings, above briefly described, the numeral 1 designates the tubular body of-a pneumatic dispatch carrier, said body being usually formed of leather although any other appropriate material could be used. In forming the side joint of the tube 1, I split one edge of the leather to form a relatively deep and narrow channel 2 which decreases in width toward its bottom and has its outer side formed by a thin tapered flap 3. The edge of this flap is pref- Serial No. 4%,417.

erably spaced inwardly from the edge of the remaining side t of the channel 2. ln order that the latter may lap a considerable distance as shown in the drawings, but this may not in all cases be necessary. The edge of the leather or other material, opposite that provided with the channel 2, is skived or beveled as indicated at 5, and this skived edge is snugly received in the channel and cemented to both sides of the latter. In addition to cementing, the edge 5 may be secured to the flap l of the channel by tacks 6, or any other preferred means.

By forming the joint in the manner set forth, it has been found to be much less liable to open up and is therefore more durable and reliable in every way. Al-

though I prefer to use tacks or the like in addition to cementing the skived edge 5 in the channel 2, such tacks or other fastening means could well be eliminated in some cases.

In attaching the usual sleeve 7 to the tube 1, I use substantially the same joint as that heretofore described. lhe outer side of the tube 1 is split circumferentially to provide a relatively narrow and deep chan nel 2 whose outer side is formed by a thin tapered flap 3 The inner edge of the sleeve '7 is skived at 5 and is cemented in the channel 2 Here again, if desired, additional fastening means such as tacks 6 may be used to secure the skived edge 5 to the side l of the channel. It will be observed however, that the thin tapered flap in all cases covers the heads of the tacks or other fasteners, thus preventing them from possibly injuring the pneumatic tube through which the carrier passes.

I consider the use of my improved joint on pneumatic carrier tubes to be very important, as such joint overcomes a number of dificulties heretofore existing and greatly increases the life of the carrier tube.

It claim:

1. A dispatch carrier tube having in its outer side a circumferential split forming a relatively narrow and deep channel and a thin, tapered flap forming the outer side of said channel, and a sleeve surrounding one end of said tube, said sleeve having a skived edge in said channel secured to both sides thereof.

2. A dispatch carrier tube having in its thereof, and additional securing means pass outer side a circumferential split forming through said skived edge and the side a relatively narrow and deep channel and of the channel opposite said flap. 1 a thin, tapered flap forming the outer side In testimony whereof I have hereunto set 5 of said channel, a sleeve surrounding one my hand.

end of said tube, said sleeve having a skived edge in said channel cemented to both sides DUNCAN MACMILLAN 

